Five ways to make a story brief more useful
Give a character an actionable goal. “She is upset” describes a state; “she must retrieve a letter before the post office closes” drives action. Make the obstacle directly relevant to the goal.
Turn voice into requirements you can review: close third person, limited emotional explanation, short dialogue and two concrete environmental details. You can then assess whether the result follows them.
Define the scope of the turn, such as an opening, conflict or exchange. Even a long story benefits from bounded requests rather than mixing an outline, character encyclopedia and prose in one task.
Supply facts to preserve and state which option you selected. For revision, name the problem and effect: “Remove the repeated explanation and show hesitation through action” is more useful than “make it better.”